Trolley wheel



Nov. 26, 1940. A. v. VIROSTEK TROLLEY WHEEL .Filed July 9, 1938 s Sheets-Sheet 1 A tiomeys Nov. 26, 1940. A. v. VIROSTEK TROLLEY WHEEL Filed July 9, 1958 3 Sheets-Sheet 2 Invenior 4v V V V V V V V V Attorneys Nov. 26, 1940. A. v. VIROSTEK TROLLEY WHEEL 7 Filed July 9, 1938 3 Sheets-Sheet 3 r O t n e w 1 Attorneys Patented Nov. 26, 1940 UNITED STATES PATENT OFFICE 1 Claim.

This invention appertains to new and useful improvements in electricity transmission means for vehicles and more particularly to a novel trolley wheel.

The principal object of the present invention is to provide a trolley wheel constructed in such a manner as to eliminate the frequentinconvenience of the trolley Wheel jumping the trolley wire. I

Another important object of the invention is to provide a trolley wheel constructed in such a manner as to afiord a constant and uniform contact with the trolley Wire to the end that sparking and overheating of the trolley wheel will be substantially eliminated.

These and other important objects andadvantages of the invention will become apparent to the reader of the following specification.

In the drawings Figure 1 represents a side elevational view of the improved wheel structure.

Figure 2 is a top plan view.

Figure 3 is a sectional view taken substantially on the line 33 of Figure 1.

Figure 4 is a vertical, sectional View through one of the swingable roller assemblies.

Figure 5 is a side elevational view of a slightly modified form of wheel.

Figure 6 is a sectional View taken substantially on the line B6 of Figure 5 with the wheel element removed.

Referring to the drawings wherein like numerals designate like parts, it can be seen in Figure 1, that the assembly includes a pair of elongated side plates 5--5 which at their intermediate portions are bored to receive the pintles of the trolley wheel 6. These pintles which are denoted by numeral 1 also extend through the upper end of the trolley wheel yoke 8 which is of the conventional construction.

Adjacent each end of each side plates 5 is the downwardly extending cutout portions 9 defining.

edge portions through which an elongated bolt member l0 extends, this bolt member extending across the notch 9 and through the upper portion of the inverted L-shaped rocker H. Each of these rockers II has a coiled compressible spring l2 interposed between its lower end portion and the adjacent side of the corresponding side wall 5. These threaded members ID are driven longitudinally into the side wall from the ends of the wall as shown in Figure 1.

A roller I3 is rotatably mounted on a spindle [4 carried by the upper end portion of each of the rockers l I, each of the spindles 14 being provided with a kerfed head l5 and a reduced threaded portion IS, the latter being disposed into a threaded opening of the corresponding rocker ll.

Each of these rollers I3 is formedwith a beveled head portion l6 which rides against the trol-' ley wire A as clearly shown in Figure 2.

Obviously the spring l2 serves to hold the rollers I3 snugly against the wire A and'serves to prevent disengagement of the wheel 6 from the wire A.

A slightly modified form of the invention is shown in Figures 5 and 6 wherein the side walls 50-50 are formed with cut out portions I! at their end portions to receive the reduced bored lug-like extensions I8. Threaded members in the form of pins l9 extend downwardly through the head portions of the plates 5aand through the lugs I8, thus hingedly connecting the end plates 20 to the side plates in.

Each of these end plates 20 is notched as at 911. and has mounted therein a roller assembly consisting of the rocker I la on which is the spool Ha having its end Ilia engageable with the trolley Wire -A. Between each of the rockers Ha and. the corresponding plate 20 is the compressible coiled spring [2a.

Connecting each opposed pair of plates 20-28 is a coiled extensible spring 2 l these springs serving the plates together and obviously assist the entire assembly to make short turns following sharply curved trolley wire A;

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

A trolley wheel structure comprising a pair of side plates, a trolley wheel rotatably mounted be tween the said plates, a trolley wire engaging rollers, a mount for each of the rollers, the upper edge portions of the said side plates being formed 

